Stage 1 Tuning for E63 Question


I have a question regarding tuning my 2008 E63 ECU. Do you guys recomend sending the ECU OR NOT.
I got the Eurocharged fathers day special for my car, (Stage 1 Tuning )but I am having second thougts about sending the ECU OR have them send me the laptop to do the tuning.
what do you guys think?
Also has anybody get their "Eurocharged High Flow Cats", I want to know if they make any difference in the HP or is it just a little louder.
Thanks for your re-plys.
I i would stick to the top guys . Kleemann's tune is your best bang for your buck . After my tune i picked up 28 rwhp more But i also had intake work done as well so realistic
i think 20 hp .
I i would stick to the top guys . Kleemann's tune is your best bang for your buck . After my tune i picked up 28 rwhp more But i also had intake work done as well so realistic
i think 20 hp .





